ARPSN Amateur Radio Public Seismic Network
Cobb [Mountain], CA - FFT-CSP Animation -
March 2009

Channel One - North/South

Channel Two - East/West

Chang Heng's seismoscope
For More Information:
A New Look at an Old Tool:
the Cumulative Spectral Power of Fast-Fourier Transform Analysis
Sheng-Chiang Lee and Randall D. Peters
Physics Department, Mercer University, Macon, GA 31207